LAN (Local Area Network)
It is a computer network system that connects workstation only covers a small area, such as a school, a home, or and airport.
Advantages - Do not need network cable (wire) - Lower cost to maintain the network. - Higher data transfer rates - Low rate of error - Easy to expand and reposition
Disadvantages - Need at least 1 switch - Higher cost to setup the network - Only applied in small geographic area
WAN (Wide Area Network)
A computer network provides the Comprehensive and variety wider range, such as a city, a country, and a continent, to connect among workstations.
Advantages - Lower cost to setup - Covers a larger geographical area (long distance) - Shares software and resources with connected workstations
Disadvantages - Higher cost to maintain the network - Generally slow - Need a firewall to secure unauthorized access. - Harder to maintain the network (a big hindrance) - Need fully skilled IT workers
VLAN (Virtual LAN)
A network of computers that behave as if they are connected to the same wire even though they may actually be physically located on different segments of a LAN. It can be looked at as a group of different segments of LAN.
Advantages - Perform more security by controlling permission of workstations - Higher manageability (flexible, easier and cheaper) - Can use wireless technology to connect (Even though a user moved to another location, she still can stay on the same VLAN without any hardware reconfiguration)
Disadvantages - Communication problem (If a user in VLAN1 wants to communicate with another user in VLAN2, they cannot be directly connected – must configure information of the user in the switch) - When the network is broken, the maintaining and repairing will cost a lot of money - Cannot prevent from virus (If one user is infected, then there has great possibility for other users to be infected the virus)
WLAN (Wireless LAN)
A type of LAN uses high-frequency radio waves rather than wires to communicate (transmit and receive data over distances) between users.
Advantages - Easier to add or move workstations - Easier and faster to setup - Do not need a wire (avoid digging and drilling buildings to setup wires)
Disadvantages - Security is more difficult to guarantee - As a number of connected workstations increase, the speed of data transfer rate decreases - Only operate in limited (arranged) distance - Has interference from other networks
Internet
The Internet is a global network of computers. Its commonly known as the World Wide Web. It uses TCP/ IP protocols, which are the rules in how it should run. For example how the exchange of packets are to be transmitted.
Intranet
The Intranet is a private network that is based from the World Wide Web browser. It has a lot of advantages. Some of these are that the intranet allows reduced hardware and software costs, easy installation, and minimal training. It improves communication within a community and allows you to access it from any Internet browser.
Extranet
The extranet, is a private network like the Intranet. However it uses Internet protocols. It can be apart of the Intranet; this is to allow people outside the community to be users. It can allow for example, two businesses to connect to each other.
Switches and Hubs
LAN is a network in the computer that is physically connected to each other. Hubs and switches are a component of this and are both attached to nodes. Hubs and switches allow any node on the network to communicate with each other. However the difference between a switch and a Hub is that Hubs are less expensive. This is because a hub broadcasts messages to all the networks until the right computer collects the information. However a Switch is more expensive because it knows exactly what network to send the particular information. Also another reason why Hubs are less expensive is because they are a lot slower because they only allow one signal at a time to be sending to a network.
Routers
A router is a hardware devise or a software program that allows messages to travel different LAN networks.
Difference between P2P and Client server arrangement
Peer to Peer (P2P)
Client server
No central server – no central storage or authentication of users
Has separated dedicated servers and clients in a client/server network – users can access most files, which are generally stored on the server. And the server will determine which users can access the files on the network
No security
Better security
Should be installed in very small businesses where users interact regularly
Can become as big as you need
Inexpensive
Very expensive
There is no better one to determine which one to use. The better will depend on one’s budget and the size of area.
It is a computer network system that connects workstation only covers a small area, such as a school, a home, or and airport.
Advantages
- Do not need network cable (wire)
- Lower cost to maintain the network.
- Higher data transfer rates
- Low rate of error
- Easy to expand and reposition
Disadvantages
- Need at least 1 switch
- Higher cost to setup the network
- Only applied in small geographic area
WAN (Wide Area Network)
A computer network provides the Comprehensive and variety wider range, such as a city, a country, and a continent, to connect among workstations.
Advantages
- Lower cost to setup
- Covers a larger geographical area (long distance)
- Shares software and resources with connected workstations
Disadvantages
- Higher cost to maintain the network
- Generally slow
- Need a firewall to secure unauthorized access.
- Harder to maintain the network (a big hindrance)
- Need fully skilled IT workers
VLAN (Virtual LAN)
A network of computers that behave as if they are connected to the same wire even though they may actually be physically located on different segments of a LAN. It can be looked at as a group of different segments of LAN.
Advantages
- Perform more security by controlling permission of workstations
- Higher manageability (flexible, easier and cheaper)
- Can use wireless technology to connect (Even though a user moved to another location, she still can stay on the same VLAN without any hardware reconfiguration)
Disadvantages
- Communication problem (If a user in VLAN1 wants to communicate with another user in VLAN2, they cannot be directly connected – must configure information of the user in the switch)
- When the network is broken, the maintaining and repairing will cost a lot of money
- Cannot prevent from virus (If one user is infected, then there has great possibility for other users to be infected the virus)
WLAN (Wireless LAN)
A type of LAN uses high-frequency radio waves rather than wires to communicate (transmit and receive data over distances) between users.
Advantages
- Easier to add or move workstations
- Easier and faster to setup
- Do not need a wire (avoid digging and drilling buildings to setup wires)
Disadvantages
- Security is more difficult to guarantee
- As a number of connected workstations increase, the speed of data transfer rate decreases
- Only operate in limited (arranged) distance
- Has interference from other networks
Internet
The Internet is a global network of computers. Its commonly known as the World Wide Web. It uses TCP/ IP protocols, which are the rules in how it should run. For example how the exchange of packets are to be transmitted.
Intranet
The Intranet is a private network that is based from the World Wide Web browser. It has a lot of advantages. Some of these are that the intranet allows reduced hardware and software costs, easy installation, and minimal training. It improves communication within a community and allows you to access it from any Internet browser.
Extranet
The extranet, is a private network like the Intranet. However it uses Internet protocols. It can be apart of the Intranet; this is to allow people outside the community to be users. It can allow for example, two businesses to connect to each other.
Switches and Hubs
LAN is a network in the computer that is physically connected to each other. Hubs and switches are a component of this and are both attached to nodes. Hubs and switches allow any node on the network to communicate with each other. However the difference between a switch and a Hub is that Hubs are less expensive. This is because a hub broadcasts messages to all the networks until the right computer collects the information. However a Switch is more expensive because it knows exactly what network to send the particular information. Also another reason why Hubs are less expensive is because they are a lot slower because they only allow one signal at a time to be sending to a network.
Routers
A router is a hardware devise or a software program that allows messages to travel different LAN networks.
Difference between P2P and Client server arrangement
There is no better one to determine which one to use. The better will depend on one’s budget and the size of area.